Pump and valve



(No Model.)

. A. F. FLETCHER.

PUMP AND VALVE.

Patented July 26, 188?;

Ill

a? WITNESSES} rmrj J,

H IJV/V'figli;

" UNITED STATES PATENT OFFICE.

ALLEN F. FLETCHER, OF ATHOL, MASSACHUSETTS.

PUMP AND VALVE.

SPECIFICATION forming part of Letters Patent No. 367,139, dated July 26, 1887.

Application filezl January 8,1887. Serial No. 2:23.752. (No model.)

To aZZ whom it may concern:

Be it known that l, ALLEN F. FLETCHER, a citizen of the United States, residing at Athol, inthe county of Worcester and State of Massachusetts, have invented certain new and useful Improvementsv in Pumps and Valves for same; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invent-ion is an improvement in pumps, and relates more particularly to an improvement in the valves and boxes which inclose and operate with them. The bodies of the valves for the upper and lower boxes are nearly similar in general form, varying only as to exterior size necessary to render each applicable ing the said bodies thicker at the centers,

transversely measured, and thin at the upper or largest diameters. The cones of said valves serve to insure to the valves proper seating after being lifted from their places. In preparingone of these valves for use, I form an annular groove at the junction of the horizontal and vertical portions of the said annular rabbet' for the reception of a packing ring,which latter when in place rests against the under side of the horizontal portion of said rabbet and within the said annular groove. 4 The packingw'hich is preferably of leather, is cut in the form of a fiat ring, the opening of which is of a diameter less than the diameter of the valvebody at the bottom of the said annulargroove.

' Before placing the packing upon the valve it is made thoroughly wet, andthen forced over into the annular groove and up against the under side of the fiat portion of the disk, where "it binds and fits snugly when dry. There is a lower and upper box provided to receive each one of these valves, the lower of which is arranged to be fixed firmly in the well-tube,and the upper is in the form of a piston, adapted to play up and down during the movement of the piston or pump rod. Both of said boxes are cup-shaped and somewhat conical in exterior form, each being provided with a bottom portion with an opening provided for the passage of the fluid. The depth of the cone of the lower box ispreferably somewhat deeper than that of the upper box. The exterior surfaces of the cones in both boxes are horizontally grooved, so that annular recesses may be formed to receive packmg-rings.

The packing for these boxes is cut of proper size from a sheet of packing material, and before being fitted to place, like the rings for the valves, are made thoroughly wet, so that they may be expanded and made pliable before being pressed to place over the cones. When they shrink they conform exactly to their respective grooves, and are held from slipping off between the flanges formed by the cutting of said grooves. The lower of the said boxes is provided with a bridge formed across its top, which arches upward and forms a rest for the upper box'when the latter is down and at rest. At the base of this bridge a lever of peculiar form is pivoted or hinged, one arm of which is hooked to a loop in the top of the lower valve. The other arm of said lever,extending upward, is finishedwith a knob which receives the weight of the upper box and yields, thus opening the lower valve to allow the fluid to passdownward through said box. The upper box has cast within its cup,and extending upward, several lugs which serve as guides to. the valve inits vertical movement. This" upper box is also provided with a bridge, and in the center of said bridge is formed a screw-threaded socket, provided'to receive the pump or pistonrod.

In the drawings illustrating my invention, Figure 1 is a sectional view of a well-tube, with the boxes and valves within the same. 2 is a plan or top view showing the lower box. Fig. Sis a similar view showing the upper box, fire. Figs. 4 and 4* show samples of the packing-rings as cut from the sheet of pack ing material.

Similar reference-letters indicatelike parts in all of the figures.

Referring to the drawings, A is the box, lo cated at a proper point in the well-tube X,

having a horizontal bottom provided with a circular opening,f, and side wall, 9, of conical form. From the upper edge of this-conical wall springs the bridge F, and at the base of this bridge, beneath its center, is hinged the lever E.

Fig.

D is a valve, of disk form, provided with an annular groove, (1, which receives and holds the packing-ring a, which latter bears against the under side of the cut away portion of said valve. The valve D, when in place, rests with its packing-ring bearing upon the bottom of the box A, its conical portion extending partly through the opcningf. XVhen said valve falls, should the conical surface of its bottom strike upon the diaphragm of the box, it would be immediately shunted, so as to bringthe packing upon the valve-seat. Upon the top of the valve D is a loop, I), which receives the hookshaped end of the lever E, by which the said valve is raised to allow the fluid above the box A to pass through the opening f.

The box A is provided with packing a,

, snugly fitted about its conical exterior to form 12: tight joint between the tube X andthe said The upper box, B, has a form similar to that of box A, but preferably more shallow. On the upper edge of the circular wall of this box is a bridge, G, provided with aserew-threaded socket, J, which receives the screw-threaded end of the pump rod (1. From the upper surface of the bottom of the box B rise several studs, e, which serve as guides to the valvel) during its movement. The valve D, as previously stated, is formed like that of D, and it bears when in place over the opening of the box B, its packing-ring, like that of the valve below, resting upon the upper surface of the bottom of said box. tions of the boxes A and B are grooved, as shown, so as to form convex surfaces for the packing-rings which envelope them to bind and hold upon. A pin, 0, is provided to run through the socket and project on either side of same horizontally to prevent the valve below from jumping out of place when lifted.

In operating the pump the box B is lifted The exterior conical por-- and lowered by its rod d, in the usual manner of pump-pistons. The partial vacuum formed by the lifting movement of said box gives place to the fluid, which lifts the valve and rushes through the opening in the box A, filling the space between the two boxes. Vhen a downward movement is made to the box B, the fluid below closes the valve D and lifts the one D, and finds its way through the opening in box B. \Vhen said box Bis again lifted, the fluid is discharged from the well-tube in the usual manner. empty the box A entirely, the upper box is moved downward until the lower surface of its bottom comes in contact with the upwardly-extending arm of the lever E. Said lever now yields and lifts the valve D from its seat, and immediatelythereafter thcvalveD' comes in contact with the bridge F, by which latter said valve is also lifted to empty the upper box.

It may be observed that no hinges are employed to form the axes of motion of the valves, and consequently their construction is simplified and they are rendered easy of application and removal.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with a pump-box pro- When it is desirable to vided with a bridge and a lever hinged at the base of the same, of the tilting valve provided with a loop to engage'a hook of said lcver,and a back bearing to rest against the interior of the box-wall while the said valve is being tilted, as and for the purpose set forth.

In testimony whereof I afflx my signature in presence of two witnesses.

ALLEN F. FLETCHER.

Witnesses: Osoxn A. Soo'rT, ANDREW J. HAMILTON. 

